LibGuides: Mathematics: Area of squares, rectangles and triangles

AREA OF SQUARES, RECTANGLES AND TRIANGLES

In this module, you can study how to find the area of squares, rectangles and triangles; and the differences between perimeter and area.

Formula for area of a rectangle: b x h (base x height)

Formula for area of a triangle: x b x h

While perimeter is measured in units of length, area is measured in units squared.

Objects with the same perimeter can have different areas.

Area does NOT equal length plus width.

Study and practice

Quiz yourself on finding the area of a rectangle
This page from mathopenref.com explains how to find the area of a rectangle and then allows you to design rectangles and find their area. (NOTE: If the virtual manipulative does not work for you, try clicking the "full screen" button.)
Quiz yourself on finding the area of a triangle
This page from mathopenref.com shows you how to find the altitude (height) of a triangle and how to calculate the area. You can test knowledge by designing triangles and finding their area. (NOTE: If you have trouble with the manipulative, try clicking the "full screen" button.)

0.00 min addition (+), subtraction (-), multiply (x), divide (÷)

1.19 min decimal point
2.43 min C, CE and backspace
4.19 min square, square root & fractions
6.17 min percentage (%)